Influência da energia de compactação no comportamento expansivo do massapê̂

Abstract

The study aimed to evaluate the variation of the magnitude and expansion rate of Massapê samples, when compacted at different energies. The soil was characterized according to ABNT norms, and then the compaction curves were determined in normal, intermediate and modified energies, according to DNIT 164/2013-ME, which were submerged in water to determine the expansion, as the DNIT 172/2016 standard. With the optimum compaction parameters for each energy (Udmax e wot), two additional samples were reproduced for each energy, close to the respective optimal conditions of density and humidity, so that it was possible to determine the expansion in triplicate. The results obtained indicated that it is a highly expansive material and that the increase in the compaction energy, although producing greater densification of the material, did not serve to minimize the deformability of the material when flooded.